Tire for railway vehicles



Patented Nov. 24, 1931 UNITED STATES PATENT OFFICE ANDRE JUIIES EIOHELIN, OI PARIS, FRANCE, ASSIGNOB TO HIGHELIN ET C'IE -OF CLEBIONT-FERBAND, FRANCE, A CORPORATION OF FRANCE mmm HEISSUED application filed November 10. 1980, Serial R0. 494,768, and in France November 21, 1929.

will be described with reference to the ap-.

pended drawing, given merely by way of example and which shows a vertical section of a pneumatic tire cover according to my invention.

The tread 2 of the cover 1 of the pneumatic tire is laterally extended, as shown at 3, on

the side that bears on rail 4. The axis of the pneumatic tire is shown in A-A, and the axis of the rail in BB.

It will readily be understood that even 95 under the most unfavourable circumstances,

for instance in curves, when the flange of one of the .wheels comes in contact with the rail on one side while the flange of the opposed wheel is aboutone and ahalf inch distant from the other rail, a maximum tread surface 1 is. alwa s obtained, owing to the ,dissymmetric isposition of the tread.

While I have in the above description endeavored to disclose what I believe to be an efiicient and sim le embodiment of my invention, it is to e understood that the invention is not limited by the specific details as shown, but that the tread surface could be increased on one side in any other suitable manner without departin from the s irit of my invention as compre ended wit in the scope of the appended claims.

What I claim is:

1. In covers of pneumatic tires adapted to be fitted on railwa vehicles, a cylindrical laterel extension of t e tread on one side only,

giving the cover a dissymmetric shape, whereby an increased tread surface of the tire is obtained.

2. In covers of pneumatic tires adapted to be fitted on railway vehicles, acylindrical lateral extension of the tread adapted to bear on the rail and so disposed that the axis of the tire is normally at a certain distance from the axis of the rail, whereby an increased tread surface of the tire is obtained, and the tire can readily adjust itself to variations in the distance between rails.

3. A cover for a pneumatic tire adapted to be run on a rail which comprises a'relatively wide cylindrical smooth tread surface, the

lane of symmetry of which tread surface 1s parallel to, and outwardly disposed with respect to, the plane of symmetry of the inner surface of said cover.

In testimony that Iclaim. the foregoing as my invention,v I have signed my name.

ANDRE JULES MICHELIN. 

